.container {
  width: 300px;
  height: 300px;
  border: 1px solid rgba($color: #000000, $alpha: 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
}
.text {
  width: 100%;
  height: 100%;
  background-image: radial-gradient(50px 100px ellipse, transparent 40px, yellow 41px, red 49px, transparent 50px),
  radial-gradient(30px circle, red 29px, transparent 30px);
}